How To: Change the Oil in a Cummins Onan RV OG 4000 Generator - RV/Trailer

6.5K views· 38 likes· 8:30· May 28, 2021

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NOTE: In the video, when I say 5W-40, I mean 15W-40! PRODUCTS: Cummins Onan Air Filter: https://amzn.to/4eLlrQh Cummins 15W-40 Oil: https://amzn.to/4lQylij Cummins 15W-40 Oil (4-pack): https://amzn.to/3jF8GvH This video shows how to change the oil in a Cummins on an RV OG 4000 generator. Oil types can be SAE 30 or SAE 15W-40. Cummins recommends changing the oil every 100 hours or every year, depending on which comes first.

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